Practice MCQs, Assertion–Reason, Match List and Fill in the Blanks from NCERT Class XI Animal Kingdom — answers & concise explanations.
Animal Kingdom - Class-XI: Practice ( MCQs, Assertion-Reason, Match List-I with List-II and Fill in the Blanks) for CBSE and NEET preparation 2026.
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Q331.
List-I (Skeleton Type)
List-II (Animal Group)
(a) Spicules or spongin fibres
i) Corals (Cnidaria)
(b) Calcium carbonate skeleton
ii) Chondrichthyes
(c) Chitinous exoskeleton
iii) Porifera
(d) Cartilaginous endoskeleton
iv) Arthropoda
[Animal-Kingdom] [class-xi]
A) a-iii, b-i, c-iv, d-ii
B) a-i, b-ii, c-iii, d-iv
C) a-iv, b-iii, c-ii, d-i
D) a-ii, b-iv, c-i, d-iii
Correct Option: A [ A ]
Remark: • Sponges (Porifera) supported by spicules or spongin fibres. • Some cnidarians (corals) have calcium carbonate skeletons. • Arthropods have chitinous exoskeletons. • Chondrichthyes possess a cartilaginous endoskeleton.
Q332.
List-I (Term)
List-II (Phylum)
(a) Collar cells (Choanocytes)
i) Echinodermata
(b) Comb plates
ii) Hemichordata
(c) Proboscis
iii) Porifera
(d) Calcareous ossicles
iv) Ctenophora
[Animal-Kingdom] [class-xi]
A) a-ii, b-i, c-iv, d-iii
B) a-iv, b-iii, c-i, d-ii
C) a-iii, b-iv, c-ii, d-i
D) a-i, b-ii, c-iii, d-iv
Correct Option: C [ C ]
Remark: • Collar cells (choanocytes) line the spongocoel in Porifera. • Comb plates are used for locomotion in Ctenophora. • A proboscis, collar and trunk division is characteristic of Hemichordata. • Calcareous ossicles form the endoskeleton of Echinodermata.
iii) Marine, but migrate to fresh water for spawning
(d) Ctenophora
iv) Exclusively marine, bioluminescent
[Animal-Kingdom] [class-xi]
A) a-i, b-ii, c-iii, d-iv
B) a-iv, b-iii, c-i, d-ii
C) a-iii, b-i, c-ii, d-iv
D) a-ii, b-iv, c-iii, d-i
Correct Option: C [ C ]
Remark: • Cyclostomes (e.g., lampreys) are marine and migrate to fresh water for spawning. • Reptiles are mostly terrestrial with creeping/crawling locomotion. • Amphibia have a dual life (aquatic larval stage and terrestrial adult). • Ctenophora are exclusively marine and often bioluminescent.
Q334.
List-I (Organisation)
List-II (Example Phylum)
(a) Diploblastic, tissue level
i) Annelida
(b) Triploblastic, organ level, acoelomate
ii) Porifera
(c) Triploblastic, organ-system, pseudocoelomate
iii) Platyhelminthes
(d) Cellular level
iv) Aschelminthes
[Animal-Kingdom] [class-xi]
A) a-v, b-iii, c-iv, d-ii
B) a-ii, b-iii, c-i, d-iv
C) a-v, b-i, c-iv, d-ii
D) a-iv, b-v, c-ii, d-i
Correct Option: A [ A ]
Remark: • Coelenterata are diploblastic and at tissue level (diploblastic: ectoderm + endoderm). • Platyhelminthes are triploblastic, organ level, and acoelomate. • Aschelminthes are triploblastic, organ-system level and pseudocoelomate. • Porifera exhibit cellular level organisation.
iii) Body is cylindrical and worm-like (no shell/exoskeleton)
(d) Hemichordata
iv) Chitinous exoskeleton
[Animal-Kingdom] [class-xi]
A) a-ii, b-iv, c-i, d-iii
B) a-i, b-ii, c-iii, d-iv
C) a-iii, b-i, c-iv, d-ii
D) a-iv, b-iii, c-ii, d-i
Correct Option: A [ A ]
Remark: • Mollusca: body often covered by calcareous shell. • Arthropoda: chitinous exoskeleton. • Echinodermata: endoskeleton of calcareous ossicles. • Hemichordata: worm-like body without shell or exoskeleton.
Q339.
List-I (Term)
List-II (Group)
(a) Hermaphrodite (Monoecious)
i) Aschelminthes
(b) Separate sexes (Dioecious)
ii) Porifera
(c) Asexual reproduction by fragmentation
iii) Reptilia
(d) Oviparous with direct development
iv) Annelida (Earthworm/Leech)
[Animal-Kingdom] [class-xi]
A) a-v, b-i, c-ii, d-iii
B) a-i, b-ii, c-iii, d-iv
C) a-ii, b-iv, c-i, d-iii
D) a-v, b-iv, c-i, d-ii
Correct Option: A [ A ]
Remark: • Earthworms and leeches (Annelida) are monoecious (hermaphrodite). • Aschelminthes generally have separate sexes (dioecious). • Porifera reproduce asexually by fragmentation. • Reptilia are oviparous with direct development.
